Saw gummer and sharpener



Sept' 16o T. C. BLACK SAW GUMMER AND SHARPENER Filed May 2, 1923 2 Sheets-Sheet l www Sem. la, 1924.

1,508,588 T. c. BLACK sAw AGUMMER AND SHARPENER Filed May 2 1923 2 Sheets-Sheet 2' IN VEN TOR.

Patented Sept. i6, 1924.

tlnovras` c. BLACK, on MEMPHrs SAW vanimee AND. seinerseits.' i

n Application ledMay 2,

J T o all whom t may concern.'

y Be itknownt'hat I, THoa'rns C. BLACK, a D citizen of thek United .States,' residing 4at Memphis, rin the county of Shelby and; State offfennessee, have invented certain-newand useful Improvements in Saw Guinmers and Sharpeners, of; ,Which the 'following is a full, .clear, and yexact descriptioinsuch as will enable anyone`-` skilled in the art to 1c make and. use the same.

VMy invention; relates to machines for tiling circular 4saws; and more especially` to l machines for filingv saws for Acottonfgins which are thin circularsaws ofsheetistecl,

1 3 ,having each a large number oit pointed teeth cut aroundithe circumference thereof as 1n 4 any other saw but ordinarily having nog set Ordinarily 70 or 8O ofrthesel to. the teeth. saws are arranged: on a common mandrel,

sc ,being equally spaced apart by discs. about if? or BV thick, of yabout four inches smaller diameter than-the saws. These saws rapidly become dull and require frequent rei ,.sliarpening, which because of the number oft. teeth and number of saws becomes a job of more than usual magnitude. My invention relates especially to ma Achilies for tilingIv these saws thus assembledA either in place in, the gin or after the manto drelhasbeen removed and placed onl `a special 'frame'built 'for that purpose. Itwill y. y 4 y y be noted lio-wevenythat While this is its pri-, that theubracket'jniay ,bemfslid alongfthese' marypurpose, it. may benadaptedl for use ioiliug ordinary circular saws if it `be so 35, desired. l

A The objects. ot my invention are,` first,-to A...provide-a.,rapid-and-elicient saiv filer; sec.- AVIfond to pro-vide means for automatically ,teedi ngthe teeth in succession' to the'udise 4U file; third, toV provide means. for adjusting the. device to various sizes ofsaws 'and unl den certain limit-ations to various positions of. thesaw mandrel with respect to the'y holding lmeans for the tiling devicepitourth, to provide automatic means to permit the disc tile to adjust itself to teeth slightly out of proper location; fifth, to provide fineans to Aadjust-.the'saw location for varying pitch ci teeth; sixth` to provideI adjusting .means 50.. tor. regulating ydepth of cut; seventhto provide means forrelieving the; pressure on the tiling -means for irregular depth of teeth;

c eighth, to provide means for holding.v the saws steady during filing, and ninth, to improve the structureand method ofpperation ot' such machines.

eletatiodiegf "adjust- A the variousl rparts; a numraln all. the v-ieWS tion '0f the l Q.irCulti@ITS-3.11@

fil' .2,fiS spasinsfdsebetuen; and 3, ,iS th.: drame, 011.1., vhishitheaw; Idn

etiket-satema" ).drel (nQtShQ'WnXiIS mounted andftofl inch the,lingjinachined fastened. Thi may be "or be 'af-special passes l bracketfy 6 'and `tl'njougli the slot the',v arm' is provided with a clamping any desiredposition, so'thfat 'thetframe may "be moved toward .or frointhe saw and leveled "01? adjusted aS may! be. dsred, l and then clampedjnf, l A

14 is" ,a ,rossshattmduated int/Suitable Vnaled in suitable bearings in the frame 11.

2O is an arm designated herein as an arbor larm which` arm has upwardly extending lugs 21 'which are bored out toy form bear ings in which the cross shaft 14 is free to v.rotate the' said shaft thereby forming al support on which the arm 2O may be oscillated. 22 is the disc lile arbor which is journaled inl bearings 23a, 22b and 233 in the said arbor arm 20, and which also has a. limited longi- \tud1nal'mot1on in the said bearings.

24 is a *grinding 'wheel or 4disc file which is threaded' ontothis arbor or otherwise fastened thereto,

V25 and 26 are inter-meshing spiral gears, the gear 25 having a key 27 which slides in a spline 28 in the arbor 22 and being longi-. tudinally confined between the bearings 23a an d.23b. The gear 26 is keyed or otherwise suitably fastened-to the shaft 14. It will therefore, be seen that when the driving gear slot 53 in the arbor arm 20.

motion of the said arm 42. 49 is a compressionspring to provide such return motion, and 50 is a nut to regulate the tension of the spring.

The arbor 22 as before stated, has a limited longitudinal motion. 51 is a yoke carried by a bolt 52 which extends through a 54 is a nut which may be loosened to move this yoke and adjust the arbor longitudinally. The arbor k22 also carries a collar 55 fixed thereon and 56 are oppositely disposed' compression springs which bear against this collar and the yoke 51 to provide a limited automatic longitudinal adjustment of the said arbor. 57 is the saw guide which it will be especially noted is a part of the bearing 23 at the outer end of the arbor arm 20 and is not only in close proximity to the point of action of the disc tile 24, but also is in fixed relation to the yaxis of the said disc file and within very narrow limits to the sphere of `cutting action thereof, so that it conforms Ain movement to the axis and. to the disc file.

This guide is formed by cutting a slot of i6 is rotated, it will rotate the pinion 15, the

shaft .14 through these spiral gears 26, 25,

i the arbor 22 and the filing wheel 24 thereon.

The driving shaft 17 also has keyed thereon a cam 28, the face of which cam supportsfa roller 29 which is journaled on a Vpin-3() mounted in lugs 31 projecting below an adjustable block 32, one 'end of which is hingedy to thev arbor arm 2O by a pin 33. This arm 32 may be adjusted relatively to the'arbor arm 2O by means of a set screw 34 acting through a compression spring 35. 36 is a block to transmit the pressure of the saidfscrew 34 to the spring 35 and 37 a kplunger betweenthefspring and the adjustvable block 32. 38-is a threaded post screwed into-the frame 11, whichv post carries an adjustable ynut 39, to limit ythe returnr motiony ofthe arbor v arm 20' and a compression spring 40, acting against the said arm 2O to hold,l the roller 29 incontact with the cam 28. 41'is a nut to adjust or regulate the the saw in a downwardly and outwardly projecting lug integral with the end of the arbor arm 20 and which lug preferably surrounds the entire sphere of cutting action i .of the said disc file when the same is lbeing used. This it will be noted brings a part of the guide or holder as close as allowable to the edge of the disc and directly in the plane of action of the said disc. If desired, the guide 57 may be provided on either or both sides with a set screw 58 which may be locked by a nut 59 (Figs. 2 and 3), only one such screw being shown. 60 is a fly wheel mounted on the shaft 14.

In use, the bars 4 and 5 with the machine thereon are bolted to the frame 3, carrying the saws to ,be led. The brackety 6 is shifted to bringy the machine in line with the first saw and the arm 8 and frame 11 are then adjusted to bring the disc le 24 into ap vproximately proper relation with one of the tension of the spring40. 42 is a feed arm Y which is `pivoted o n apin43 mounted in the vframe 11. y 44 is a dog hinged on a pin 45 in the vend, :of the saidpfeed arm, which dog is adaptedto engage 1n succession each tooth lof the saw to -befiled/4 and to move the said saw forward-fone ,tooth at atime. r The arm :w42 is slotted to provide space for the cam 28,

and the roller 29 and its supporting lugs 31,. '.fhe underside 42@L of this arm rests on andfis oscillated by rollers 46,which in turn are journaled on a pin 47 which passes fthrough and is fastened in the cam 28. 48

is a nut on the post 28 limiting the return teeth and the feed dog 44 into relation with another tooth, and the parts are clamped.

Final adjustment is then made by shifting the saw arbor 22 slightlyyby means of the yoke 51 and the depth of cut is adjusted by tightening or loosening the screw 34. Filing is then started by turning the handle 19 and thus rotating the filing wheel. As the driving gear is rotated the cam 28 isY also rotated forcing` the roller 29 upward and the filing wheel 24 downward against the tooth. As the high point of the cam passes the roller 29 and the latter starts downward, the rollers 46 begin acting against the underside l42?i of the arm 42 thus forcing the dog 44 downward and advancing the saw one tooth and into positionvfor the next tooth to be filed. Should an individual tooth be slightly out-of place," the springs 56 permit the disc lfile 24 to 'adjust`- itself automatically -to the incorrect spacing at the same time causing t-he file to bear hardest against the incorrect side and thereby cut where most needed. Should the savsT be out of round and too large at any point,-the' spring would provide relieflagainst possible damage to saw or disc file, and at thev point Where it is needed.

I have used in this specification the term disc file, but itis distinctly to beunder-A stood that this may be a le, or a grinding I Wheel, as may be 4desired. -Ihave used the term keyed as designating aY means for 'fastening the cam,` gears and pinions to shafts, but I wish it distinctly understood` that I do not thereby limit myself-to suchform of fastening only, as it is evident that set screws or other forms of fastening may be used Without departing from the spiritof my invention.

Having now fully described my invention, what I claim and desire to secure by Lettersy Patent in the United States iszl. On a saw gummer andsharpenerjthe combination with means for rotating the same,\a` disc file carried thereon and means for-bringingthe saine intoA cutting vrelation to a tooth'to be filed, a yoke surrounding said shaft, acol-fy lar on said shaft intermediatethe arms of saidyoke, resilient means'interposedbe-y tween the collar and each yoke arm, to permit the shaft to automatically adjustfitselffin both directions axially, to adjust `the file to variations in tooth location.

2. In a saw gumming machine, the combination 'with parallel transverseamembers, a bracket slidable thereon, an arm rotatably adjustable about one of saidmembers, means for clamping said arm to said bracket, a frame hinged to the upper end of said arm, means for locking the position of said frame on said arm, a transverse shaft journaled in said frame. an arbor arm oscillably mounted thereon, an arbor longitudinally movable, journaled in bearings on the said arm, a collar on said arbor, a disc file mount ed on the outer end of the said arbor, a yyoke longitudinally adjustable relatively to said arbor' arm having a depending member embracing said arbor on each side of said collar compression springs surrounding said arbor between said collar and said yoke aA longitudinaly shaft,`

llfm'einbers, fa vpair 'of spiraly gears driving Asaid arborfrom said cross shaft, a pinion on said cross shaft,v a driving shaft and means for rotating thesame, a driving `gear meshing f with saidjpinion. attached tov andf` rotated by saidf'driving shaft, a cam: on said driving shaft, an adjustable block'hinged below` the inner endofy saidarbor arm, a'roller jourN naled in said block and resting on said cam,

an adjusting screw, a compression'#spring lbetween said screw and said block, a compression springbearing against theI upper side oftheinner, end of said arborarm,.and means for adjusting the tension of the said spring, a `feed arm oscillatably fmount'ed in the` machine frame, a roller journaled in said cam bearing against' the inner-end of said feed arm, a compression spring to hold said yarm againstsaid roller, means for adjusting' the tension of saidsspring, and al-` dog on 'thefouter end of said arm yadapted `to engage the teethy of a sawto be filed.

In a saw gummer, i the combination With va frame, and means'forwadjusting same relatively to the saw, a transverse,:shaftl journaled in said frame, an arborf arm oscil lably mounted thereon, an arborylongitudinally-movable, journaled in bearings on the ysaid arm, a. collar on said'arbor, a-disc file mounted on the outer end of the isaidtarbor, a yoke longitudinally adjustable relatively to said arborarm having ay depending member embracing saidy arbor on each side of said collar, compression springszsurround ino' said arbor between said Fcollarvand saidyoe members, means for drivingsaidarbor from said shaft, afcam andr meansfor, rotating the same, an adjustable blockhinged below thev inner end yof said arbor f arm, a roller journaled in said block and resting on said'cam, an'fadjusting screvv,a compression spring ybetween ysaid 'screw and said i block, a vcompression spring ,bearing .against the upper siderof the inner vend ofsaidzarbor arm, and means'y for adjusting the tension of the said spring, .a feed 'earm oscillatably mounted in the machine framera rollerjournaled in said ram bearing against theiinner end of -said feedV arm, aY compression spring to hold 'said' arm` -against said roller, means ,for

adjusting the'L tension of saidl spring, Aand a dog on the outer end of said arm adapted to engage the teeth of a sau7 to be filed.

4. In a saw gummer, the combination with a frame and means for adjusting and locking the position of the same, of an arbor arm oscillably mounted therein, an arbor longitudinally movable, journaled rin bean ings on the said arm, a disc file mounted on the outer end of the said arbor, a yoke longitudinally adjust-able relatively to said arbor arm having a depending member embracing said arbor on each side of said collar, compression springs surrounding said arbor between said collar and said yoke members,

llO

driving means for said arbor, a cam, resilient 'adjusting means between said cam and the inner end of said arbor arm, a compression spring bearing against the upper side of the inner end of said arbor arm, and means for adjusting the tension of the said spring, a feed arm oseillatably mountedY in the machine frame, a roller journaled in `said cam, bearing against the inner end of said arm, a compression spring to hold said arm against said roller, means for adjusting the tension of said springr` a dog on the outer end of said arm adapted to Vengage the teeth of a saw to be iiled.

5. ln a saw gummer, the combination with a frame and means for adjusting same relatively to the saw, of an arbor arm oseillablylmounted therein, an arbor longitudinally movable, journaled in bearings on the said arm, a dise file mounted on the outer end of the said arbor, resilient means permitting longitudinal displacement of said arbor, means for driving said arbor, a cam, and means for rotating the same, a resilient member'between said cam and the inner end of said arbor arm, adjusting means for said member, resilient means for holding said end of said arbor arm toward said cam, a feed arm oscillatably mounted in the said frame, a roller journaled in said cam, bearing against the inner end of said feed arm,

means holding said arm against said roller, means for adjusting the tension of said ine-ans, and a dogl on the outer end of said arm ada ted to engage the teeth of a saw to be file (i. In a saw gummer, the combination with a frame and means for adjusting` and looking the position of said frame, of an arbor arm osoillably mounted therein, an arbor journaled in bearings 0n the outer end of said a an, a dise file mounted on the outer end of the said arbor, driving means for said arbor, a eambelow the inner end of said arbor arm, resilient adjusting means between said cam and the inner end of said arbor arm, resilient means for holding the inner end of the said arm down, a feed arm oseillatably mounted in the said frame, means Carried by said cam for operating said feed arm, a spring to hold said armv against said operating means, means for adjusting the tension of said spring, and a dog on the outer endof said arm adapted to engage the teeth of a saw to be filed.

7, In a saw gummer, the combination of parallel transverse bars, a bracket sldable thereon, an arm rotatably adjustable about one of said bars, means for clamping said arm to said bracket, a. frame hinged to the upper end of said arm, means for looking the position of said frame on said arm, and saw gumming means carried by said frame.

8. ln asaw gumming machine, the oomblnation with al transverse shaft, an arbor arm oscillably mounted thereon, an arbor journaled in bearings on the said arm, a filing wheel mounted on the outer end of the said arbor, a pair of spiral gears driving said arbor from said cross shaft, a pinion on said cross shaft, a driving shaft and` means for rotating the same, a driving gear shaft, a cam on said driving shaft, an adjustable block hinged below the inner end of said arbor arm, a roller journaled in said block and resting on said Cam, a oompres sion spring against said blook, means for varying the tension tof said spring, a oompression spring bearing against the upper side of the inner end of said arbor arm, and means for adjusting the tension of the said sprng, and feed means operated from said cam.

9. ln a saw glimmer, the combination with a transverse shaft, an arbor arm oseillatably mounted thereon,l an arbor longitudinally movable, journaled in bearings on the said arm, a disc file mounted on the outer end of the said arbor, means for driving said shaft, a cam and means for rotating the same, an adjustable member between the inner end of said arbor arm and said cam, resilient means of holding the inner end of said arbor arm, against said member and means for adjusting the same, and feed ing means controlled from said cam.

In testimony whereof l have hereunto set my name.

THOMAS C. BLACK.

Witnesses:

CHAs. R. RUBEY, F. C. Fransen 

